Open source is going to win it all: Harvey proves it | E2328

This Week In Startups is made possible by: Superhuman https://Superhuman.com Sentry https://sentry.io/twist Lightfield https://lightfield.app Today's show: Jason's been saying it for years now (and we've got an All In clip from 2023 to prove it). Open source will win the AI race. This week gives us a major evidence point, as $11B legal AI company Harvey released its own in-house model, trained on an open-weight Kimi K3 base. Harvey made a proprietary specialized solution without having to risk sharing its precious expert-compiled data with the major frontier labs. PLUS we're checking out the FREE AI dictation app Willow with co-founder Allan Guo, and finding out how he plans to compete with giants like Wispr Flow and Apple. AND we've got the Stanford student who built an automated golf cart and gave luminaries like Jensen Huang and Sam Altman rides around campus. Guests Allan Guo on X: https://x.com/_allanguo Willow: https://willowvoice.com/ Ethan Goodhart: https://x.com/EthanGoodhart Sign up for the Wind TestFlight: https://testflight.apple.com/join/zZqmhhwf Relevant Links CNBC: OpenAI "will be a public company in 2027": https://www.cnbc.com/2026/08/19/open-ai-ipo-timing-2027-friar.html OpenAI Zero Data Retention Pledge: https://openai.com/index/our-commitment-to-zero-data-retention TWIST (June 2026): Jason comments on OpenAI and training data: https://youtu.be/o3eow1nTrcI?si=orungk7OmplOuyio&t=742 All In podcast (Feb 2023): Jason comments on open source vs. frontier models: https://youtu.be/PVgBWV2bvLs?si=j6y7sHS0wx9q09oa&t=5173 Harvey: https://www.harvey.ai/ Harvey Tenet Research Preview: https://www.harvey.ai/blog/post-training-update-harvey-tenet Fireworks AI: https://fireworks.ai/ Wispr Flow: https://wisprflow.ai/ Pipedrive: https://www.pipedrive.com/ Nvidia Jetson Thor: https://www.nvidia.com/en-us/autonomous-machines/embedded-systems/jetson-thor/ OpenAI shares Wind golf cart clip: https://www.tiktok.com/@openai/video/7645336713472134431 Starlink Mini: https://starlink.com/mini-product-us?srsltid=AfmBOorzM7arxhdzYAdDpH6RGD4LLg9WV_BFnEoLuYieuHuGSCjQTE1Y Toro mowers: https://www.toro.com/ 404 Media: https://www.404media.co/ Punchbowl News: https://punchbowl.news/ Semafor: https://www.semafor.com/ Skift: https://skift.com/ Newcomer: https://www.newcomer.co/ Deirdre Bosa on YouTube: https://www.youtube.com/@deebosa Electrek: Genesis GV90 review: https://electrek.co/2026/08/20/genesis-gv90-luxury-coach-doors-images/ Toyota Alphard gallery: https://global.toyota/en/mobility/toyota-brand/gallery/alphard.html The Clash "London Calling" video: https://www.youtube.com/watch?v=EfK-WX2pa8c Timestamps: 0:00 What is Jason's Grok Bot up to? 5:17 Systems over goals 9:43 Superhuman - Superhuman Go is an AI chat that's always there when you need it, already aware of what you're doing, and doesn't ask you to start from zero. Sign up to get the best in AI at https://Superhuman.com 13:08 OpenAI will go public soon 14:19 Top line ARR matters way less than churn 20:43 Sentry - Your team should be focused on shipping features — not chasing down bugs. New users can get $240 in free credits when they go to https://sentry.io/twist and use the code TWIST 29:55 Lightfield - Name one person who's ever enjoyed updating a CRM. Exactly. Lightfield's AI agent does it for you — it even prospects and books your meetings. Used by thousands of startups. Free at https://lightfield.app 30:52 Harvey launches Tenet 34:32 "Open source is going to win it all" 35:58 Allan Guo of Willow joins 39:18 Managing a single source of truth across a team 47:00 Lon and Jason love the Toyota Alphard 51:00 Stanford student and AV expert Ethan Goodhart joins 1:00:09 How Ethan got Jensen Huang to go for a ride 1:00:37 Punk Rock 101 1:06:24 Phoebe Gates' secret Harvard class Subscribe to the TWiST500 newsletter: https://ticker.thisweekinstartups.com Check out the TWIST500: https://www.twist500.com Subscribe to This Week in Startups on Apple: https://rb.gy/v19fcp Follow Lon: X: https://x.com/lons Follow Jason: X: https://twitter.com/Jason LinkedIn: https://www.linkedin.com/in/jasoncalacanis Check out all our partner offers: https://partners.launch.co/ Great TWIST interviews: Will Guidara, Eoghan McCabe, Steve Huffman, Brian Chesky, Bob Moesta, Aaron Levie, Sophia Amoruso, Reid Hoffman, Frank Slootman, Billy McFarland Check out Jason's suite of newsletters: https://substack.com/@calacanis Follow TWiST: Twitter: https://twitter.com/TWiStartups YouTube: https://www.youtube.com/thisweekin Instagram: https://www.instagram.com/thisweekinstartups TikTok: https://www.tiktok.com/@thisweekinstartups Substack: https://twistartups.substack.com